I needed a way to join a set of Pokemon cards to put into a frame and couldn't find anything on here, so I made it myself. I wanted this to be modular, so as many of them could be joined together in any way possible for differing sets. 

My print settings:

• 2 walls
• 15% cubic infill
• 0.2 mm layer height

Notes:

The joiners are meant to be an interference fit to keep everything held together tightly, so some force may be required to push them in. 

These are meant to hold standard 3" x 4" toploaders.

If you want to frame a single toploader, I created a frame and stand for that as well here:

https://www.printables.com/model/693494-toploader-frame-and-stand